Canyon Padre bridge (Permian of the United States)

Where: Arizona (35.2° N, 111.3° W: paleocoordinates 9.1° N, 36.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Alpha Member (Kaibab Formation), Roadian (272.3 - 268.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Primary reference: A. K. Miller and A. G. Unklesbay. 1942. Permian nautiloids from western United States. Journal of Paleontology 16(6):719-738 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113091: authorized by Matthew Clapham, entered by Matthew Clapham on 20.07.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Tainoceratidae
Tainoceras cf. schellbachi Miller and Unklesbay 1942
 Nautilida - Grypoceratidae
"Titanoceras cf. rotundatum" = Parapenascoceras rotundatum, "Titanoceras cf. sanandreasense" = Parapenascoceras sanandreasense
"Titanoceras cf. rotundatum" = Parapenascoceras rotundatum Miller and Unklesbay 1942
"Titanoceras cf. sanandreasense" = Parapenascoceras sanandreasense Miller et al. 1933